183results about How to "Improve hydraulic conditions" patented technology

The invention relates to a circuit-type fishpond breeding system integrating a circulating water treatment process. The circuit-type fishpond breeding system integrating the circulating water treatment process comprises a fishpond shaped like an annular runway, and sewage treatment systems arranged in an inner ring of the fishpond. Each sewage treatment system comprises a vertical flow type solid-liquid separator (1), wherein a sewage discharging groove (5) perpendicular to the water flow direction is formed in the bottom of the fishpond and communicated with an inlet of the vertical flow type solid-liquid separator (1), an outlet of the vertical flow type solid-liquid separator (1) is communicated with a micro-filtration machine (2), outlet water of the micro-filtration machine (2) adopts a water pump (3) and a water lifting pipe (4) for water lifting and is injected into a biological filter (6), the biological filter (6) is separated from an aeration oxygenation pond (8) through a separation plate and is communicated with the aeration oxygenation pond (8) through a through hole in the lower portion of the separation plate, a water falling pipe (7) is arranged on the lateral wall of the aeration oxygenation pond (8) and communicated with the fishpond, and the water outlet direction at the bottom of the water falling pipe (7) is the same as the water flow direction of the fishpond. The number of the sewage treatment systems is two, and the sewage treatment systems are evenly distributed in the inner ring of the annular fishpond in a central symmetry mode.

The invention discloses internal recycle multi-dimensional electro-catalytic wastewater treating equipment, which is characterized in that the wastewater treating equipment is provided with a cylindrical device which is internally provided with an inflow water distribution pipe, an aerator pipe, an electrode reaction region, a rectifying region, a water outlet region and a scum collecting region from bottom to top. The wastewater treating equipment of the invention integrates the electro-catalytic oxidation and air floating functions into a whole with good treating effect, low energy consumption and long electrode life.

The invention discloses a LeakView leakage control and management system for an urban water supply pipe network. The control and management system comprises a partitioned management system, a leakage noise online monitoring system and a water hammer early warning and monitoring system, the partitioned management system makes the water supply pipe network to form a partitioned management mode from the factory-leaving water yield, first-level partition, second-level partition, DMA to user terminal multi-level water units, all the water units are scientifically managed through a water balance test, a pressure control strategy with the optimal water saving effect and the optimal economic matching performance is made through a response mechanism of the leakage of the water supply pipe network to the pressure, leakage noise is monitored on line by using terminal noise monitoring equipment instead of leakage detection by manual listening, the noise is displayed in the form of data, a region where the leakage is suspected to exist is found through comparative analysis of the key data, the water hammer early warning and monitoring system adopts a transient flow pressure fluctuation situation of a network system to be combined with a big data technology, and therefore the rapid change of the pressure of the pipe network system can be monitored on line, an alarm for the abnormal pressure change situation can be given in real time, on-line early warning can be realized, the data can be deeply excavated and analyzed, and water hammer protection can be made.

The invention relates to a method for preparing anti-hardening granular burning-free iron-carbon microelectrolysis filler. The method comprises the following steps of: using scrap iron, charcoal, coal ash, cement, quick lime and clay as materials, mixing the materials respectively according to the mass fraction of 32-26%, 8-10%, 32-35%, 9-12%, 5-7% and 5-7%, granulating and curing to obtain the anti-hardening granular burning-free iron-carbon microelectrolysis filler. The particle diameter of the prepared anti-hardening granular burning-free iron-carbon microelectrolysis filler is 5-7mm. The method has the advantages that when a product is used for sewage treatment, the CODCr and the chromaticity of waste water can be reduced in shorter time, the toxicity of the waste water can be reduced and the biodegradability can be improved; in the use process, the hardening is not easy to occur, the maintenance cost is low and the usage period is long; in the preparation process, waste resources are fully utilized and a burning-free process is adopted, so that the purposes of saving energy, reducing emission and treating wastes with wastes are achieved.

The invention provides a retiform biological filling device and relates to a water root position cleaning treatment biological filling device. The retiform biological filling device comprises a filling grid (1), a combination filling unit (2), a rope (3), a float ball (4), a sleeve (5) and a dead lever (6); the combination filling unit (2) is fixedly connected with the grid crunode of the filling grid (1), the upper end of the filling grid (1) is connected with the float ball (4) by the rope (3), the two ends of the filling grid (1) is fixedly connected with the sleeve (5) by fixed boundary lines, when in use, the dead lever (6) is inserted in the sleeve (5), and fixation to the retiform biological filling is realized. The retiform biological filling of the invention has the advantages of simple structure, high specific surface area, convenient processing and transportation, not jamming, not caking, long service life, simple installation, convenient management and maintenance, strong ability of anti impulsion of water flow, and the like, which can be used in root position cleaning treatment of natural water such as riverway, lake and reservoir, and artificial water.

The invention specifically relates to a mixed nutritional type denitrifying biological filler and a preparation and application thereof. The mixed nutritional type denitrifying biological filler adopts the technical principle that activated carbon, sulfur and solid carbon source are used as raw materials to prepare the denitrifying biological filler, and the denitrifying biological filler and anionic clay are mixed and loaded into an applicable reactor; the filter simultaneously has the heterotrophism and autrophism denitrifying effects, so that the problem of secondary pollution caused by adding of liquid carbon sources is effectively solved, and the production of sulfur autrophism byproducts is flexibly controlled.

The invention provides a sewage filter, which synthesizes a shallow tank theory, a dynamic coagulation theory, an accelerated coagulation theory and an inclined plate technology, effectively solves the problem of easiness in blockage of the traditional inclined plate. The sewage filter is used for subdividing raw motion water through by using filter masks and a plurality of through hole structures; and the raw water forms stable eddies at rear edges of plate holes of filter mask bodies. Under the entrainment action of the eddies, non-fluidic substances in the raw water are collected at centers of the eddies and get in continuous contact and collision with one another in eddy cores to undergo a flocculation reaction, and slides down along the mask bodies under the gravity action to settle into a mud collecting hopper, so that the purposes of removing suspended substances in the raw water and cleaning a water body are achieved. The sewage filter can rotate around an axis of a rotating shaft; and a strongly turbulent shear flow is formed through left and right repeated quick rotation to scour an inclined plate at a high speed and to clean deposits and blockages very conveniently.

The invention discloses a novel photocatalysis filter tank device and a water treatment system. The filter tank device consists of a device outer wall, an ultraviolet lamp tube, a tower tray support column, a filter material and a filter material tower tray, wherein a transparent glass bead carrier is taken as the filter material, and waste water is treated by a nanometer TiO2 film with the capability of effectively degrading organic pollutants through photo-catalytic oxidation under the irradiation of ultraviolet light.. The water treatment system mainly comprises a filter bed, an illumination system, a water distribution system and a backflow system. The novel photocatalysis filter tank device organically combines the conventional biomembrane filtering tank with the advanced photocatalysis treatment process, is ingenious in design and compact in layout, allows a light source to be uniformly distributed in the filter material, has a good hydraulic power condition, can fully utilize light energy, does not need aeration, does not generate sludge and secondary pollution, is convenient to operate and simple to maintain, is high in water-quality purification efficiency and sterilization capability, and is mainly applied to the fields of reclaimed water reuse, deep sludge (waste) water treatment and the like.

The invention discloses a suspended combined ecological filter bed and a method for remediation of eutrophicated water. The method for remediation of eutrophicated water is characterized in that a lift suspended basket is utilized as a container unit; a suspended double-filter layer composed of fly ash floating beads and ultralight attapulgite-based filter materials is loaded in the lift suspended basket; the suspended double-filter layer is a base layer for plant growth; and sewage filtration and system oxygen increasing are realized by water atomization distribution processes. Through a structural design of the suspended double-filter layer, the method provided by the invention solves effectively the problems that filter material blocking happens easily, realizes transformation from an ecological filter bed technology to a water surface remediation technology similar to an ecological suspended bed technology, avoids land occupation and construction, realizes efficient eutrophicated water remediation, reduces greatly construction and operation costs, enlarges a selection range of water cleaning plants, and is especially suitable for remediation of high-eutrophication degree water which is difficult to be treated by a single technical means.

The invention discloses an artificial wetland-microbial fuel cell coupling device with a multi-medium filter material and a wastewater treatment method by using the device, and belongs to the technical field of sewage treatment and electrochemical coupling. The artificial wetland substrate is prepared by the multi-medium filter material, and coconut shell activated carbon and stainless steel netsare used as an anode and a cathode. Emergent aquatic plants are planted, and aeration pipe are arranged. The device comprises a sieve plate, a zeolite zone, an anode zone, a ceramsite zone and a cathode zone from bottom to top; the anode zone and the cathode zone are both laid by the stainless steel meshes and are connected through an external circuit; an outer resistance is arranged between the anode and the cathode; an outflow water collecting zone and an inflow water distribution zone are respectively arranged at the upper part and the lower part, and the outflow water collecting zone and the inflow water distribution zone are respectively connected with a water supply system and a drainage system; a water inlet tank is connected with the bottom of the device; and a water outlet is formed in the upper part of the device. According to the system, the coupling effect of artificial wetland and a microbial fuel cell is fully exerted, and the multi-medium filter material is utilized, sothat the denitrification effect is enhanced, electricity generation performance is improved, and recycling of resources is realized.

The invention provides a treatment device and method of printing and desizing mixed wastewater. The treatment device of the printing and desizing mixed wastewater is characterized by comprising a water collecting regulating tank, a reinforced circulating type efficient anaerobic bioreactor, an aerobic biological contact oxidation tank, a gas-flotation tank, a high-level oxidization tank and an aeration biological filter tank. The treatment device and method disclosed by the invention are especially suitable for treating the high-ammonia-nitrogen high-concentration printing and desizing mixed wastewater generated in printing and desizing processes, a process system disclosed by the invention is adopted to effectively treat the high-concentration high-ammonia-nitrogen wastewater generated by the printing process and high-concentration high-alkaline wastewater generated by the desizing process in printing and dyeing enterprises after the two kinds of wastewater are subjected to flow-dividing and mixing, and also can be combined with a wastewater treatment process for other relatively-low-concentration pollutants in a printing and dying plant to form a complete wastewater treatment system of the enterprise, thereby realizing modifying and upgrading an existing wastewater system.

The invention relates to a microbial fuel cell constructed wetland device. The device consists of a hydrolysis acidification pool, a microbial fuel cell constructed wetland main body and an external circuit that are connected in order. The microbial fuel cell constructed wetland main body comprises a gravel water distribution layer, an anode area, an oxygen producer layer, a cathode area and an aquatic plant from bottom to top in order. The lower part on one side of the microbial fuel cell constructed wetland main body is provided with a water inlet, the other side top is equipped with a wateroutlet, the water inlet is communicated with a water outlet at the lower part on one side of the hydrolysis acidification pool through a pump and a pipeline, and a water inlet at the lower part on the other side of the hydrolysis acidification pool is communicated with a sewage inlet pipe. The external circuit consists of an anode, a cathode and a copper core lead connected to the anode and cathode, and a circuit switch is in tandem connection to the copper core lead. The wetland device provided by the invention has the characteristics of simple structure and convenient operation, and by regulating the electrode dissolved oxygen environment, can show excellent power production efficiency while strengthening the constructed wetland sewage treatment effect.

The invention relates to a multi-pipe internal pressure mechanical circulation forced cross current solid-liquid separation dynamic membrane system and a device thereof; wherein the dynamic membrane comprises a tubular shape internal pressure supporting body with plural number of large aperture nets, an upper orifice plate and a lower orifice plate, a shell, an upper cover and a lower cover; the upper orifice plate and the lower orifice plate are respectively provided with plural number of jack sockets, the tubular shape internal pressure supporting body is connected with the jack sockets; the shell is connected with the upper orifice plate and the lower orifice plate to form a water purification chamber; the upper cover and the upper orifice plate are connected to form a cross current backflow chamber, and the upper cover is provided with an water outlet for the cross current backflow water; the lower cover and the lower orifice plate are connected to form a water inlet chamber and the lower cover is provided with a raw water inlet thereupon. The dynamic membrane device of the invention has the advantages of no water power dead angle, short pre-coating time, convenient back wash, continuous work, improved dynamic membrane flux, stable water yield and long work period.

The present invention discloses a composite flow baffling water treatment biomembrane reactor, which comprises a water inlet, a water outlet and a vent nozzle, and is characterized in that a reactor is divided into relatively independent three zones such as an anoxia zone, an aerobic zone and a flat flow zone in a rectangular pool through a flow inlet separator, a flow outlet separator and a flat flow plate; the anoxia zone comprises the horizontally-arranged flat flow plate, the flow inlet separator and the flow outlet separator, wherein the flow inlet separator and the flow outlet separator are connected with the lower sides of both ends of the flat flow plate, and a plurality of flow baffling plates are arranged between the flow inlet separator and the flow outlet separator; a width of the flat flow plate is the same as a width of the pool; a width of the separator is the same as a width of the pool, and a certain distance is arranged between the separator and the left pool wall, the separator and the right pool wall, and the separator and a pool bottom plate; the flow baffling plate has a porous structure, the upper end is connected with the flat flow plate, the lower end is connected with the pool bottom plate, one side is connected with the front pool wall or the rear pool wall, a gap is arranged between the other side and the rear pool wall or the front pool wall, and the adjacent flow baffling plates are arranged in a dislocation manner; the aerobic zone is arranged between the flow outlet separator and the pool wall, the middle is provided with a porous carrier, and an aeration head is arranged on the lower portion of the aerobic zone; and one side of the aerobic zone is provided with a circulating water pump. According to the present invention, the aerobic zone and the anoxia zone are separately and independently controlled, such that mutual interference can be reduced, a good treatment can be provided, a process is easy to operate, and the reactor can be applicable for bioremediations of eutrophication water bodies, aquaculture water bodies and even industrial wastewater.

The invention discloses a wavy subsurface-flow constructed wetland landscape water body treatment system and method. The system combines a horizontal subsurface-flow constructed wetland with a vertical subsurface-flow constructed wetland to form a wavy subsurface-flow constructed wetland. By means of regularly arranging upper clapboards and lower clapboards inside the wetland and replacing a horizontal flow state with a wavy flow state, sludge flows in a plurality of modes which are connected in series and alternate in upstream and downstream flows, so that organic nutrient substances are sufficiently degraded to remarkably promote deposition of phosphorus; the sludge is repeatedly subjected to anaerobic and aerobic treatment, so that removing of nitrogen can be facilitated; appropriate limestone is added into the filler of the wetland to release Ca<2+>, so that phosphorus in the sludge generates insoluble deposition of calcium phosphate, and thus the removal rate of phosphorus is increased. Due to the adoption of modes, such as intermittent water distribution, water inflow to a water distribution pipe by forming openings in the bottom as well as serial or parallel operation of a plurality of wavy subsurface-flow constructed wetlands, the bed body of the constructed wetland plays a relatively large efficiency, the removal rate of nitrogen phosphorus and organic matters is increased and the sludge treatment capability is enhanced.

The invention discloses an eccentric-type arc movable slant board which can be used for accelerating the deposition process in sewage treatment process, clearing a water body, and improving the sewage treatment effect. According to the invention, thin boards are wound to be arc with different sizes, and are ranked at equal or variable distances so as to form groups; an eccentric shaft is fixed on a rotary shaft; the clearances of adjacent arc boards form a plurality of shallow layer deposition tanks; and treated water bodies and settled deposition objects move mutually and stably in the deposition shallow layers and are separated; the eccentric arc slant boars are rotated to shift radially and tangentially, so that water bodies at the shallow layers are subjected to gradient shearing transformation, and flocculant cores are in mutual contact, collide, adhere and polymerize so as to form dense flocculant bodies so as to be separated from water, and raw water is cleared and purified. The eccentric-type arc movable slant board provided by the invention can rotate around the rotary shaft, forms intense and turbulent shearing flows through rapid and reciprocating rotation left and right, is subjected to the high-speed washing effect, and can be used for eliminating possible deposition and blocking conveniently.

The invention discloses a drop-aeration self-driven biological rotating disc which comprises a shallow tank and a biological rotating disc, wherein the biological rotating disc is rotatably erected on the shallow tank; the shallow tank comprises a tank body and a waterproof baffle arranged at the upper part of the tank body; a water outlet weir is arranged on the right side of the tank body; a water outlet guidance baffle is arranged below the water outlet weir; a mud pipe is arranged at the bottom of the shallow tank; and the circumference of the biological rotating disc is divided into a plurality of water collection tanks at equal intervals by multiple separating trough plates. The biological rotating disc disclosed by the invention can be used for effectively solving a problem of poor drop-aeration effect, and realizing self-driven automatic aeration by virtue of improvement; a conventional operation mode of the biological rotating disc is changed; and the biological rotating disc not only can save energy but also can achieve a good aeration effect.

The invention belongs to the technical field of biochemical sewage treatment equipment, and particularly relates to a gas-liquid-solid three-phase separator. A main body structure comprises a tank body, folded inclined plates, gas-water-sludge mixed flowing gaps, gas-water-sludge separating zones, clear water gaps, sludge collecting zones, gas collecting zones, clear water zones, a water outlet ditch, sludge reflowing pipes, a reaction zone and biogas pipes; by adoption of a shallow-layer sedimentation theory, the folded inclined plates squeeze and diffuse gas-water-sludge mixed liquid flowingup into the three-phase separator from the anaerobic reaction zone through the gas-water-sludge mixed flowing gaps, biogas is collected in the gas collecting zones and discharged through the biogas pipes, sludge and air-free sludge sink into the sludge collecting zones under the action of gravity and reflow into the reaction zone through the sludge reflowing pipes, and sewage from which the sludge and the gas are removed rises into water collecting zones through the clear water gaps, so that full separation of gas, water and sludge phases is achieved; and the gas-liquid-solid three-phase separator is simple in structure, novel and unique in design concept, high in gas-liquid-solid separation performance, high in practicality and good in hydraulic condition, and can improve the operating stability and the operating efficiency of a three-phase reactor.

The invention discloses a preparation method of spherical haydite matrix for constructed wetland, which comprises removing impurity and particles in coagulated sludge at the terminal of a water supply plant to give sludge paste; completely mixing kaolin with the treated sludge, regulating the water content of the sludge to 60-65%, and preparing spherical haydite with particle size of 15-18 mm and25-28 mm by using the sludge, wherein per 1 kg of dry sludge is mixed with 0.60-0.70 kg of kaolin; and preheating at 200 DEG C for 1h, and sintering at 600-700 DEG C for 120-150min to obtain the final product with particle size of 8-10mm and 15-18mm. It is proved by the experiment that the matrix prepared by the method can remove COD (chemical oxygen demand), ammonium nitrogen and total phosphorus in wastewater effectively without matrix plugging, and is suitable for treatment of domestic wastewater, industrial and agricultural wastewater and polluted surface water. The treated wastewater reaches the first-level A standard of discharge standard of wastewater for municipal wastewater treatment plant.

A preparation method for a substrate of vertical-flow constructed wetlands is disclosed, comprising the steps of: A, selection of raw materials: biological ceramisite, zeolite, anthracite, vermiculite and slag; B, particle size of each raw material; C, each combined substrate: when the treated wastewater-characteristic pollutant is organic matter, the substrate is ceramisite; when the treated wastewater-characteristic pollutant is nitrogen, the substrate is zeolite; when the treated wastewater-characteristic pollutant is phosphorus, two substrate combining ways are present, wherein, one of the combining ways is that the substrate is anthracite and the other one of the combining ways is that the substrates, from top to bottom, are anthracite, vermiculite and slag in sequence; when the treated wastewater is mixed wastewater containing organic matter, nitrogen and phosphorus, the substrates, from top to bottom, are anthracite, biological ceramisite and zeolite. The method is simple and is convenient in operation as well as can effectively remove characteristic pollutants in the wastewater, and after being treated the wastewater can accord with standard B in Wastewater Discharge Standard of Municipal Wastewater Treatment Plant and is directly reused or discharged into waters.

The invention relates to a moving bed bio-membrane reactor provided with a biochemical reaction pool. A water inlet hole and a water outlet hole are formed in the upper portions of any two side walls of the biochemical reaction pool respectively and connected with a water inlet pipe and a water outlet pipe respectively. Suspended filler is thrown in the biochemical reaction pool, a conical sliding table is arranged in the center at the bottom in the biochemical reaction pool, a flow guiding barrel is arranged over the conical sliding table, a water outlet screen is arranged at the upper portion in the flow guiding barrel, the upper end of the water outlet screen is communicated with the water outlet hole through the water outlet pipe, the bottom of the flow guiding barrel is connected with a water outlet grate support, and an aerator pipe is arranged on the part, located on the periphery of the flow guiding barrel, at the bottom of the biochemical reaction pool. The moving bed bio-membrane reactor is simple and novel in structural design, has very high application and popularization value and is mainly applied to the sewage treatment technology.

The invention relates to an ecological ditch system for improving receiving water non-point source pollution treatment, and effectively solves the problem of how to effectively utilize the ecological ditch technical measures to treat receiving water non-point source pollution. The ecological ditch system for improving receiving water non-point source pollution treatment includes a sedimentation tank for precipitating silt and other solid matters carried by non-point source inflow water, and an ecological purification area for removing part of pollutants in non-point source inflow water, the sedimentation tank and the ecological purification area are arranged along the flow direction of the non-point source inflow water in order, a basket grating device for intercepting suspended matters in water is disposed above the sedimentation tank, non-point source inflow water enters the basket grating device and then enters the sedimentation tank, the sedimentation tank and the ecological purification area are connected by a brick structure water distribution perforated wall, the water distribution perforated wall is equipped with reserved holes ensuring hydraulic conditions, and the ecological purification area is filled with a biosorption filler serving as a microbial carrier. The system provided by the invention can treat non-point source pollution, and reduces the pollution load of pollutants to receiving water.

The invention discloses a 5 / 2 power parabola-shaped open channel. A channel section shape of the open channel is a 5 / 2 power parabola shape and the opening of the open channel is upwards; a curve expression of a section of the 5 / 2 power parabola-shaped open channel is a formula (as shown in the specification), wherein the shape coefficient a is a formula (as shown in the specification), h is a water depth and B is a water surface width; an area of a water-carrying section of the channel is a formula (as shown in the specification); a wetted perimeter of the channel is a formula (as shown in the specification); and an optimum width to depth ratio of an optimum section of the open channel is a formula (as shown in the specification), wherein the shape coefficient a is a formula (as shown inthe specification), the normal water depth h is a formula (as shown in the specification), the critical water depth hc is a formula (as shown in the specification), the open area A is equal to 1.4916h2 and the wetted perimeter P is equal to 3.09633h. The 5 / 2 power parabola-shaped open channel is not only capable of improving the hydraulic characteristics of parabola-shaped sections, but also capable of improving the water carrying capacity.

The invention relates to integrated water purifying equipment for concurrent inclined plate precipitation. A main body is concentrically partitioned into inner, middle and outer cylinders, which are respectively a flocculation zone, a filter zone and a concurrent inclined plate precipitation zone, wherein a water distributing zone is arranged at the upper segment of the concurrent inclined plate precipitation zone; an inclined plate group zone is arranged at the middle segment; a sludge concentrating chamber is arranged at the lower end; a water collecting zone is arranged between the water distributing zone, the inclined plate group zone and the filter zone; the bottom part of the water collecting zone is respectively communicated with the inclined plate group zone and the filter zone through pores; a circle of inclined plates are evenly distributed in the inclined plate group zone; the inclination angles theta of the inclined plates are 30-45 degrees; and the pores are arranged at the positions between the tail ends of two adjacent inclined plates at the bottom part of the water collecting zone and are communicated with the inclined plate group zone and the water collecting zone. The concurrent inclined plate precipitation technique is applied to the integrated water purifying equipment; flocculation, concurrent inclined plate precipitation and filtering are combined together; and the treatment process is independently and synergetically finished, so that the flocculation, concurrent inclined plate precipitation and filtering fully develop the advantages; and the integrated water purifying equipment is good in treatment effect, compact and reasonable, small in floor area, and convenient to install.

The invention discloses a combined type pump house of a drainage pump station, which comprises a base (1), and is characterized in that the base (1) is erected with a cylinder body (2); the cylinder body is internally provided with a water pump (3); a water inlet of the water pump is arranged at the lowest position in the base (1); and a water outlet of the water pump is positioned on the wall of the cylinder body. By using the pump house, the problems that the drainage pump station is larger in occupied building space or can not be used when being born higher buoyancy force of underground water and the like can be solved.

The invention discloses a low-noise groove diversion type vortex joint. The low-noise groove diversion type vortex joint comprises an upper body, a main body and a lower body, wherein the upper body and the main body are connected through a thread; the upper body and the lower body are combined to a vertical pipe water flowing channel; a transverse pipe water flowing channel is formed in the main body; a transverse pipe lateral water inlet baffle plate is arranged at one side of the transverse pipe water flowing channel; a main body water inlet is formed in the other side of the transverse pipe water flowing channel; the main body and the lower body are connected through a thread; a conical transition section is arranged at the lower part of the lower body; and a lower body water outlet is formed in the lower part of the conical transition section. The low-noise groove diversion type vortex joint has the advantages of high drainage flow, low drainage noise, saving of building area, reduction of comprehensive cost, energy conservation and environmental protection.

The invention relates to a treatment method of kitchen waste. The treatment method mainly comprises the following steps: pouring materials; separating coarse impurities; separating heavy impurities; removing oil; grinding slurry; carrying out anaerobic digestion; carrying out aerobic treatment; and introducing tap water and water exhausted after aerobic treatment in a coarse impurity separating process, and introducing water exhausted in an anaerobic digestion step in a heavy impurity separating and oil-removing process. The water is added, so that the impurity removing step, the oil extracting step and the crushing step in the kitchen waste pretreatment are perfect, the working environment is clean and automatic, and the working efficiency and the working quality are greatly improved. The pretreatment of the kitchen waste is automatic, the impurity removal is complete, the organic substance waste is little, the grease extracting rate is high, and the slurry is fine and beneficial to quick degradation of anaerobic microorganisms.

The invention particularly relates to biological denitrification filler as well as preparation and application methods thereof. The technical principle of the filler is that activated carbon and solid carbon are used as raw materials for preparation of biological denitrification filler, and the raw materials are mixed with anionic clay to be accommodated in an adaptive reactor; the reactor is equipped with a medicine adding system, a small amount of (lower than theoretical stoichiometric ratio) organic carbon is added from a water inlet position of the reactor to enhance removal of nitrate.The filler has a good denitrification effect, can also effectively solve the problem of secondary pollution caused by excessive liquid carbon.

The invention discloses an extra-high water head plane sliding emergency gate groove structure which comprises a bottom sill (2) located at the bottom between two gate piers (1). The two ends of the bottom sill (2) are connected with a gate groove (3), the upper portion of the bottom sill (2) is provided with a drainage hole (4), the two gate piers (1) above the drainage hole (4) are connected through an upstream breast wall (5) and a downstream breast wall (6), an all-steel lining structure is adopted within a 1.5-2 times orifice height range from the gate groove to the bottom sill, all corners of the gate groove are of a fillet structure, and three stages of inclined plane steps deviated towards the upstream part are arranged on the upstream surface of the downstream breast wall from top to bottom. Hydraulics conditions of the gate groove are improved, and cavitation erosion of the gate groove is reduced; a water column force can continuously act on a gate to be favorable for closing the gate safely. The integral steel lining structure is adopted, and the cavitation erosion inside the gate groove is avoided. The upstream face of the outer edge of the upper portion of a main rail is provided with an L-shaped notch, and the sliding-down wearing capacity of a gate water seal can be effectively reduced.

The invention discloses a photocatalytic disinfection reactor used for disinfecting reclaimed water and rainwater, a photocatalysis material and a preparation method thereof, an application and an application method thereof. The photocatalytic disinfection reactor comprises a sterilizer case and a disinfection reaction zone. An inlet pipe and an outlet pipe are arranged on the sterilizer case, the sterilizer case comprises a quartz cannula and a stainless steel outer sleeve; the disinfection reaction zone is an annular space formed by between the quartz cannula and the stainless steel outer sleeve, the vertical separator plates are arranged in a disinfection reaction zone every 120mm, the active carbon fiber (ACF) is fixed in the vertical separator plate for loading the nano TiO2 photocatalysis material; a heat suction / radiation fan is arranged at one end of the quartz cannula, and an ultraviolet lamp is arranged in the quartz cannula. On one hand, bacteria in reclaimed water and rainwater can be effectively inactivated, on the other hand, the operation and management of the reactor are convenient, the reactor is safe and reliable, impact and load by a certain water volume can be adapted, in addition, the disinfection reactor has removal effect to an organic matter in water, and safety risk of organism due to bacteria in reclaimed water and rainwater can be avoided.